From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9A540C433FE for ; Wed, 13 Apr 2022 16:37:25 +0000 (UTC) Received: from localhost ([::1]:51542 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nefzg-0007uk-K4 for qemu-devel@archiver.kernel.org; Wed, 13 Apr 2022 12:37:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33388) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nefv4-0008M1-An for qemu-devel@nongnu.org; Wed, 13 Apr 2022 12:32:38 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:38097) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nefv2-0003CQ-OJ for qemu-devel@nongnu.org; Wed, 13 Apr 2022 12:32:37 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1649867556; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=LdKJuurxdp133pu5OwHkbbtWUoFC7J501ekGF5OQWBs=; b=EDGe/XNuYtn2GRRCtSMAF2lhc13xc/msidHROx5/PvoGu8u97nd8S3syKGZghC0BpoSUMs xn0g1oW2dfkPwXAFxgTvv3h0Q2CouDGON40+87kIbJo0Cv8MTqZ9vsDazjUcb4xUsnFymA IpawZylmJYubr4wgoUovzVCA0Ab8Iw4= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-490-ilkluiW_OFW1QpLk1wxRxA-1; Wed, 13 Apr 2022 12:32:32 -0400 X-MC-Unique: ilkluiW_OFW1QpLk1wxRxA-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 5E1CE3841D21; Wed, 13 Apr 2022 16:32:32 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.167]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4FD3B1400B18; Wed, 13 Apr 2022 16:32:30 +0000 (UTC) From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Subject: [RFC PATCH v7 09/25] vhost: move descriptor translation to vhost_svq_vring_write_descs Date: Wed, 13 Apr 2022 18:31:50 +0200 Message-Id: <20220413163206.1958254-10-eperezma@redhat.com> In-Reply-To: <20220413163206.1958254-1-eperezma@redhat.com> References: <20220413163206.1958254-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.7 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eperezma@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=170.10.133.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Parav Pandit , Cindy Lu , "Michael S. Tsirkin" , Jason Wang , Gautam Dawar , Harpreet Singh Anand , "Gonglei \(Arei\)" , Eli Cohen , Liuxiangdong , Zhu Lingshan Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" It's done for both in and out descriptors so it's better placed here. Signed-off-by: Eugenio Pérez --- hw/virtio/vhost-shadow-virtqueue.c | 26 +++++++++++++++----------- 1 file changed, 15 insertions(+), 11 deletions(-) diff --git a/hw/virtio/vhost-shadow-virtqueue.c b/hw/virtio/vhost-shadow-virtqueue.c index a2531d5874..f874374651 100644 --- a/hw/virtio/vhost-shadow-virtqueue.c +++ b/hw/virtio/vhost-shadow-virtqueue.c @@ -122,17 +122,23 @@ static bool vhost_svq_translate_addr(const VhostShadowVirtqueue *svq, return true; } -static void vhost_vring_write_descs(VhostShadowVirtqueue *svq, hwaddr *sg, - const struct iovec *iovec, size_t num, - bool more_descs, bool write) +static bool vhost_svq_vring_write_descs(VhostShadowVirtqueue *svq, hwaddr *sg, + const struct iovec *iovec, size_t num, + bool more_descs, bool write) { uint16_t i = svq->free_head, last = svq->free_head; unsigned n; uint16_t flags = write ? cpu_to_le16(VRING_DESC_F_WRITE) : 0; vring_desc_t *descs = svq->vring.desc; + bool ok; if (num == 0) { - return; + return true; + } + + ok = vhost_svq_translate_addr(svq, sg, iovec, num); + if (unlikely(!ok)) { + return false; } for (n = 0; n < num; n++) { @@ -150,6 +156,7 @@ static void vhost_vring_write_descs(VhostShadowVirtqueue *svq, hwaddr *sg, } svq->free_head = le16_to_cpu(svq->desc_next[last]); + return true; } static bool vhost_svq_add_split(VhostShadowVirtqueue *svq, @@ -169,21 +176,18 @@ static bool vhost_svq_add_split(VhostShadowVirtqueue *svq, return false; } - ok = vhost_svq_translate_addr(svq, sgs, elem->out_sg, elem->out_num); + ok = vhost_svq_vring_write_descs(svq, sgs, elem->out_sg, elem->out_num, + elem->in_num > 0, false); if (unlikely(!ok)) { return false; } - vhost_vring_write_descs(svq, sgs, elem->out_sg, elem->out_num, - elem->in_num > 0, false); - - ok = vhost_svq_translate_addr(svq, sgs, elem->in_sg, elem->in_num); + ok = vhost_svq_vring_write_descs(svq, sgs, elem->in_sg, elem->in_num, false, + true); if (unlikely(!ok)) { return false; } - vhost_vring_write_descs(svq, sgs, elem->in_sg, elem->in_num, false, true); - /* * Put the entry in the available array (but don't update avail->idx until * they do sync). -- 2.27.0